A diamond ring

A 12.50  carats pear-shaped H color, VVS1 diamond ring. Estimate $400,000 – $600,000. Photo Christie's Image Ltd 2015

Set with a pear-shaped diamond, weighing approximately 12.50 carats, flanked on either side by a tapered baguette-cut diamond mounted in platinum

With report 2171115290 dated 15 April 2015 from the Gemological Institute of America stating that the diamond is H color, VVS1 clarity; accompanied by a working diagram indicating that the clarity of the diamond may be potentially Internally Flawless 

The magnificent jewels of Margaret Adderley Kelly

Christie's. IMPORTANT JEWELS, 16 June 2015, New York, Rockefeller Plaza